It is intermittent and seems easiest to recreate in Safari but did see it in other browsers (Chrome, IE). Using dragging and dropping the modal dialog may work find or could generate the following service side exception and then display the NCI popup.

{noformat}
java.lang.ArrayIndexOutOfBoundsException: -1
at org.icefaces.ace.component.dnd.DroppableRenderer.decode(DroppableRenderer.java:65)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:469)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1379)
at org.apache.myfaces.context.servlet.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:731)
at org.apache.myfaces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:214)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:956)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIForm.visitTree(UIForm.java:354)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at javax.faces.component.UIComponent.visitTree(UIComponent.java:984)
at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1167)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartialExecute(PartialViewContextImpl.java:420)
at org.apache.myfaces.context.servlet.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:401)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:88)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:88)
at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:281)
at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:88)
at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:281)
at javax.faces.component.UIViewRoot$ApplyRequestValuesPhaseProcessor.process(UIViewRoot.java:1488)
at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1372)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:759)
at org.apache.myfaces.lifecycle.ApplyRequestValuesExecutor.execute(ApplyRequestValuesExecutor.java:38)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:170)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
at com.liferay.faces.bridge.BridgePhaseResourceImpl.execute(BridgePhaseResourceImpl.java:100)
at com.liferay.faces.bridge.BridgeImpl.doFacesRequest(BridgeImpl.java:128)
at javax.portlet.faces.GenericFacesPortlet.serveResource(GenericFacesPortlet.java:178)
{noformat}